Impurity Separation
The systematic removal of dissolved pectins, hemi-celluloses, and processing oils from the hot water drafting baths of a spinning frame stabilizes yarn production and prevents fiber discoloration. Implementing wet spinning bath extraction during the wet spinning process maintains the required water purity for linen yarn drawing. This purification prevents these sticky organic compounds from re-depositing on the yarn surface, ensuring high tensile strength and smooth weaving.
Bath Maintenance
Wet spinning frames run linen roves through hot water kept at sixty to seventy degrees Celsius to soften the raw flax’s natural gum. As raw fibers pass through, organic material dissolves in the bath, turning the water dark and sticky over a few hours. When technicians conduct a wet spinning bath extraction, they draw off a portion of the contaminated liquid and replace it with clean, pre-heated water.
This process runs continuously on modern spinning lines to maintain a stable chemical concentration in the baths. Frequent monitoring prevents variations in drafting tension, which would otherwise result in uneven yarn diameter and frequent breakages.
Effluent Treatment
Directing the extracted bath liquid to the mill’s wastewater treatment plant ensures compliance with municipal environmental regulations. Effective wet spinning bath extraction reduces the loading on secondary treatment filters by concentrating the organic waste before dilution. The retrieved water can then be recycled back into the heating system of the mill.
